Styrene-butyl acrylate surface waterproof glue and preparation method thereof

Abstract

The invention discloses styrene-butyl acrylate surface waterproof glue which comprises, by weight, 100 parts of starch, 0.065 part of medium temperature amylase, 12 parts of glacial acetic acid, 0.5 part of ferrous sulfate, 25 parts of hydrogen peroxide, 125 parts of styrene, 50 parts of butyl acrylate, 15 parts of rosin, 3.5 parts of Gemini emulsifiers, 1.0 part of organic silicon defoamers and 675 parts of deionized water. The styrene and the butyl acrylate are pumped into a titration vessel, the deionized water and the starch are added into a reaction vessel, the medium temperature amylaseis added after temperature rise, the glacial acetic acid and the Gemini emulsifiers are added, the ferrous sulfate is added after dissolution, two types of titrating solution are simultaneously titrated, thermal reaction is performed for 45-50 minutes at the temperature of 85 DEG C after titration, reaction liquid is rapidly cooled, the organic silicon defoamers are added, standing is performed, and the reaction liquid is filtered and fed into a finished product packaging tank after passing chemical examination.

Description

Technical field: [0001] The invention relates to a styrene-butyl acrylate surface waterproof glue and a preparation method thereof, and belongs to the technical field of chemical raw material preparation. Background technique: [0002] Sizing is an important process in papermaking. Its purpose is to uniformly distribute a low surface energy substance on the surface of the paper through a certain process to form a layer of liquid-repellent film to prevent or delay the penetration and diffusion of liquid into the fiber, so that Paper or paperboard has anti-liquid (especially water and aqueous solution) diffusion and penetration properties, and is mainly divided into two categories: internal sizing and surface sizing. In recent years, surface waterproof sizing has become the main form of sizing treatment in modern papermaking technology due to its many advantages. Its advantages are as follows: 1. Low sizing cost; 2. Significantly improve paper surface properties, such as surface st...

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Problems solved by technology

Among them, aluminum sulfate, rosin gum, AKD, starch, cellulose, chitin, PVA, PAM and other varieties have always occupied an important market proportion due to their wide sources and low prices, but there are problems such as low sizing degree and poor paper strength. , poor printability, and "false sizing" and other problems; polyurethane and fluorocarbon polymers are used in small amounts and have excellent performance, but they are expensive and their applications are also limited; and styrene-maleic anhydride solution polymers ( SMA), styrene-acrylic acid solution polymer (SAA) are gradually losing the market because they are solvent-based products that are not conducive to environmental protection

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